A human being who is a fan of Stephenie Meyer's 'Twilight Series', consisting of 'Twilight', 'New Moon', 'Eclipse', and 'Breaking Dawn'. Twilighters are usually quite addicted to the series, and would be considered 'obsessed' by some. (Also known as 'Twi-Hards')

Example: On the set of the "Twilight" movie, Twilighters have been seen camping out so that they can both see the actors and perhaps sneak onto the set.

A group of obsessive fans (mainly girls) who know everything there is to know about the books Twilight, New Moon, Eclipse, Breaking Dawn, and probably Midnight Sun as well, by Stephenie Meyer. Often in love with one of her characters.

For the midnight release of Breaking Dawn, several hundred Twilighters showed up at Barnes and Noble.